Maxima Function
ssearch (seq, string)
ssearch(seq,string,test)
ssearch(seq,string,test,start)
ssearch(seq,string,test,start,end)
Returns the position of the first substring of string that matches the string seq.
Default test function for matching is sequal.
If ssearch should ignore case, use sequalignore as test.
Use start and end to limit searching.
Note that the first character in string is in position 1.
(%i1) ssearch("~s","~{~S ~}~%",'sequalignore); (%o1) 4